4 documents found, page 1 of 1
Pollination of Pagamea duckei Standl. (Rubiaceae): A functionally dioecious spe...
Terra-Araujo, Mário Henrique; Webber, Antonio Carlos; Vicentini, AlbertoThe floral biology, pollination and breeding system of Pagamea duckei Standl. (Rubiaceae) were studied at the Reserva Biológica da Campina, Manaus, Amazonas, Brazil. Floral morphology suggested that P. duckei is a distylous species. However, crossing experiments revealed that it is functionally dioecious. The flowers are actinomorphic, yellowish, produce nectar and a sweet odor, which is more intense in the mor...
Alguns aspectos da biologia floral de Annona sericea Dun. (Annonaceae)
Webber, Antonio CarlosSão apresentados neste trabalho alguns aspectos da biologia floral de Annona sericea Dun. As suas flores apresentam características de cantarofilia e os insetos visitantes são besouros Chrysomelidae (provável polinizador) e moscas Sciaridae (eventualmente polinizador acessório). Os besouros alimentam-se da parte interna das pétalas e também copulam no interior da flor. A temperatura das flores se eleva até 6°C ...
Pollinator limitation and late-acting self-incompatibility mechanism as causes ...
Oliveira Barros, Eduardo Cristo de; Webber, Antonio Carlos; Machado, I. C.The breeding system of Inga edulis Mart. and Inga stipularis D.C. was studied in an area of forest, located in the UFAM Experimental Farm, Manaus, AM, from November/2006 to November/2007. The results showed that both species do not set fruit from self-pollination and that the percentage of fruit set proceeding from cross-pollination in I. edulis (5%) and I. stipularis (21%) is superior to the natural pollinatio...
Floral biology and pollination of Casearia grandiflora, Casearia javitensis and...
Vásquez, Silvia Patricia Flores; Webber, Antonio CarlosFloral biology, pollination and reproductive system of Casearia grandiflora Cambess., C. javitensis Kunth and Lindackeria paludosa (Benth.) Gilg were studied on the Federal University of Amazonas campus, Manaus, Amazonas, Brazil (03°04'34" S, and 59°57'50" W), from November 2003 to December 2004. Observations of morphology, floral biology and floral visitors were made. The reproductive system and reproductive s...